Datasheet

System x3550 M5 46
The ServeRAID M5225 SAS/SATA Controller has the following specifications:
Eight external 12 Gbps SAS/SATA ports
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Supports 12, 6, and 3 Gbps SAS and 6 and 3 Gbps SATA data transfer rates
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Two external x4 mini-SAS HD connectors (SFF-8644)
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Supports 2 GB flash-backed cache (standard)
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Supports RAID levels 0, 1, 5, 10, and 50 (standard)
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Supports RAID 6 and 60 with the optional M5200 Series RAID 6 Upgrade
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Supports optional M5200 Series Performance Accelerator and SSD Caching upgrades
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PCIe x8 Gen 3 host interface
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Based on the LSI SAS3108 12 Gbps ROC controller
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Supports connectivity to the EXP2512 and EXP2524 storage expansion enclosures
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For more information about the ServeRAID M5225, see the Lenovo Press Product Guide at
http://lenovopress.com/tips1258
The ServeRAID M5225 SAS/SATA Controller supports connectivity to the external expansion enclosures
listed in the following table. Up to nine expansion enclosures can be daisy-chained per one M5225
external port. For better performance, distribute expansion enclosures evenly across both M5225 ports.
Table 26. External expansion enclosures
Part number Description Maximum quantity supported per
one M5225
70F0 / 70F1 Lenovo ThinkServer SA120 8
610012X EXP2512 Storage Enclosure 17
610024X EXP2524 Storage Enclosure 9
Lenovo ThinkServer SA120 support
For details about supported drives and cables for the Lenovo ThinkServer SA120, see the Lenovo Press
Product Guide:
http://lenovopress.com/tips1234
EXP2512 and EXP2524 support
The external SAS cables listed in the following table support connectivity between external expansion
enclosures and the ServeRAID M5225 SAS/SATA Controller.
Table 27. External SAS cables for external storage expansion enclosures
Part number Description Maximum quantity supported per
one enclosure
Server to Expansion enclosure connectivity (Mini-SAS HD x4 to Mini-SAS x4)
00MJ162 0.6m SAS Cable (mSAS HD to mSAS) 1
00MJ163 1.5m SAS Cable (mSAS HD to mSAS) 1
00MJ166 3m SAS Cable (mSAS HD to mSAS) 1
Expansion enclosure to Expansion enclosure connectivity (Mini-SAS x4 to Mini-SAS x4)
39R6529 1 m SAS Cable 1
39R6531 3 m SAS Cable 1